Lighting a big environment for VR

I'm creating a big indoor environment that is playable for VR. All of the assets have been placed into the scene but I haven't lit it yet, normally I just bake the lighting, but the bake times are very $$anonymous$$gh and sometimes crash because of my ram (16GB).

Should I try and use a different method of lighting, maybe realtime or mixed?

Or a different method of workflow of lighting?

Any help would be greatly appreciated